Automatic water-heater.



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PATENT EEICE.

ROBERT SCHLUMBERGER, E ALLEGIIENY, PENNSYLVANIA, AssIGNoR rro ALVIN s.KING, 0E sEwIoKLEv, PENNSYLVANIA.

AUTOMATIC WATER- H EATER.

SPECIFICATION forming part of Letters Patent No. 629,175, dated July 18,1899. l Application filed January 17, 189.8.; Serial No. 566,892.(Noamodei.)

To a/Z'Z whom it may concern:

Be it known that LRoBEn'r SCHLUMBERGER' a citizen of the United Statesof America, re-

siding at Allegheny, in the county of Allegheny and State ofPennsylvania, have in-v vented certain new and yuseful Improvements inAutomatic Water-Heaters, of which the fol-l lowing is a specification,reference being had therein to the accompanying drawings.

This invention relates to certain new and water-heater which will beoperated entirely by its own pressure and which is not controlled by theopening and closing of the coldwater supply.

' The principal features of my invention reside in the automatic Valve,which is operated entirely by the pressure of the hot water and whichmay be regulated to open and close the supply of gas when the pressureof the water has reached a predetermined point.

The invention also includes a novel form of burner and also a peculiararrangement and construction of thecoils, both of-whichhave been madethe subjects of separate applications, and which have therefore not beenincluded in detailin these drawings and specifi-Vv cation. v

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike letters ot reference indicate similar parts throughout theseveralviews,in which-- Figure l is a perspective view of myimprovedwater-heater as. it appears when in use. Fig. 2 is a vertical sectionalview of the valve. Fig. -3 is a perspective view of the plunger withinthe Valve. Fig. 4 is a like view of the supporting-stem for the plunger.Fig. 5 is a side view of a portion of the casing of the valve, showing aslot arranged therein to admit the atmosphere within the case andprevent counter-pressure on the bottom of the plunger. Fig.is'alongitudinal sectional View of a portion of the boiler-casing and ofthe burner. Fig. 7 is a perspective i'iew of my improved water-heater,partly broken away at its side, showing the interlocking water-coil.

In water-heaters designed for instantaneous `heating as heretofore.constructed the boiler has always been arranged in avertical position,and it has been found difiicult to feed the Vgas in a manner that thesame would cover any great degree of surface of the coils. In 'myinvention the heater is arranged horizonvtally andA the pipes in whichthe water is heated are wound in coils that are interlocked with eachother in a manner whereby the greatest possible amount of the ceiling isobtained within the heater-casing. fed through my improved burner intocontact withy the coils and courses almost or entirely -in the casingelv is connected the cold-water.

supply c, which is providedvintermediate of 4its'controlling-cock d andthe casing with a Vcheck-valve e, which prevents any of thewaiterpassing through the coils baci; into the cold-water supplyyrg'lothe opposite end of the coils orat any point where ,it may be desired isconnected the hotgwaterjsupply f, controlled at a sink or basinby 'anordinary cock or spigot g. q y .JL

The gas-supply` h is providedwith acontrolling-cock fc and isconnectedlwith the screw-threaded end Z of 'the Yvalve-casing m, thegas-supply beingalso connected to the screw-thread t' on the oppositeside of the valve and carried in any suitable manner forward, where itis con nected atl? tothe burner.`

The gas is' e @sans lcasing p, between the bottom of the same and theplunger q, and surrounding the plunger and supporting-stem ois a stifftension-spring fr', which serves to normally support the plunger andrelieve its Weight from the supporting-stem 0, as will be hereinaftermore fully described. Said plunger is preferably provided on its upperend with a gasket'q',which maybe bound rmly to the top of the plunger bymeans of the plate q2, fastened in position by a screw Q3 engaging intothe screw-threaded aperture Q4, providedin the top of the plunger.Screw-tapped in the upper end of the casing p is a nipple s, to whichthe neck t is connected, the other end thereof being attached to theupright u, which is connected by the union V to the hot-water supplyf atany suitable point thereon. The gas-valve casing m is provided with anordinary transverse wall in', in which is formed the valveseat fm2. Thevalve m4 is carried by the stem m5 and is held normally open by means ofa tension-spring n', which engages the head n2, provided on the lowerend of the stem, said tension-spring being retained within its oasing bymeans of the cap n3. Counter-pressure on the bottom of the plunger q isobviated by providing a slot n in the side of the casing p, therebypreventing any compression of the air within the casing as the plungeris forced downward through the pressure of the heater.

The casing a is provided entirely around its periphery with one or morerows of aper; turcs cl. for the admission of the proper quantity of airto the gas, these apertures being preferably made at a point in closeproximity to the series of gas-tips which are arrangedon the burner.

My improved form of burner, of which a sectional view is given in Fig.6, isfully described in detail in a separate application for LettersPatent and is for this reason described but briefly in this application.It comprises a drum a2, to which, as heretofore stated, the gas-supplypipe is connected at Z2, this shell having a suitable door a3 forlighting the gas, and on its inner face a4, and which abuts against theedge of the easing a, is provided a series of gas-tips a5. This shell isprovided with lugs b', arranged around its periphery and through whichpass fastening-rods b2, extending the length of the casing and engagingin lugs b3, provided on the head b4, which incloses the other end of thecasing and with which the i'ue h5 communicates. The shell a2 is providedwith a suitable aperture c for the reception of a pipe 02 for-thefeeding of the pilot-light, thev latter being composed of one of thegas-tips which are secured in the plate a4 of the burner. Assuming, now,that the parts have been secured in their respective positions, theconnections from the water-supply to the coil-pipe having been made andthe gas for the pilot-light having been ignited, the controlling-cock dof the coldwater supply being opened the water passes through thecheek-valve e until the coils of pipe within the casing have been filledwith water, the check-valve preventing the water from passing backwardinto the cold-water supply. The hot-Water spigot g may then be opened,and as the pressure of water from the heater reaches the predeterminedpoint,whicl1 cooling of the water the springs o" and n raise theirrespective plunger-s and valves byy reason of the pressure on the top ofthe plunger having been relieved, thus permitting the gas to again flowthrough the casing m to the burner, where it is ignited by thepilot-light and burns until the pressure of the heater lhas again beenraised to a point sufficient to repeat the heretofore-describedoperation. I desire to call particular attention to the fact that inthis form of heater the supply of gas is controlled entirely by thepressure of the heaterinsteadof being controlled by the opening andclosing of the cold-Water supply, as in the ordinary manner. As thepressui'e of the heater is being exerted upon the plunger,

thereby causing the same to seat the valve yand shut otf the supply ofgas to the burner,

the counter-pressure on this plunger is relieved by providing a casingsurrounding the sameand having asuitable slot n4, by means of which theair admitted within the casing, and which would otherwise be compressed,is permitted to escape therefrom.

Having fully described my invention, what I desire to claim as new andsecure by Letters Patent is- In an automatic water-heater, thecombination of a water-heating receptacle having a suitable supply anddelivery connections, a gas-burner adapted to heat said receptacle andhaving a suitable supply-pipe, a valve in the gas-supply pipe, a springfor holding said valve normally opened, a piston-casing in proximity tothe gas-valve, said casing being in communication with the deliveryconnection of the Water-receptacle, a piston in said` casin g andconnections between the said piston and gas-valve, the arrangement ofparts being such that the piston is operated by the pressure of thewater in the receptacle to seat the valve, substantially asset forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

ROBERT SCHLUMBERGER.

Vitnesses:

A. M. WILSON, GEO. B. PARKER.

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